Banking as a Service (BaaS) is a model where licensed banks expose their core banking infrastructure—accounts, payments, cards, lending, and compliance—via APIs so that non-bank companies can embed financial products directly into their own platforms. The bank holds the license and handles regulatory requirements; the BaaS client builds the customer-facing experience.

BaaS enables use cases such as branded debit cards inside a gig-economy app, embedded lending at point of sale, or IBAN accounts inside an accounting tool—without the non-bank needing its own banking license. Providers in this space include Solaris, ClearBank, Railsr, Griffin, and others. Some embedded finance platforms bundle BaaS with card issuing, compliance tooling, and ledger services.

The Open Banking Tracker lists BaaS and embedded finance providers with filters by capability (accounts, cards, lending, payments) and geography. See the Embedded Finance directory to compare platforms.